<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>Gets previously set hook on function or method</title>
 </head>
 <body class="docs"><div id="layout">
  <div id="layout-content"><div id="function.uopz-get-hook" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">uopz_get_hook</h1>
  <p class="verinfo">(PECL uopz 5)</p><p class="refpurpose"><span class="refname">uopz_get_hook</span> &mdash; <span class="dc-title">Gets previously set hook on function or method</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.uopz-get-hook-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>uopz_get_hook</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$function</code></span>
   ) : <span class="type"><a href="class.closure.html" class="type Closure">Closure</a></span></div>

  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>uopz_get_hook</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$class</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$function</code></span>
   ) : <span class="type"><a href="class.closure.html" class="type Closure">Closure</a></span></div>

  <p class="para rdfs-comment">
   Gets the previously set hook on a function or method.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.uopz-get-hook-parameters">
  <h3 class="title">参数</h3>
  <dl>

   
    <dt>
<code class="parameter">class</code></dt>

    <dd>

     <p class="para">
      The name of the class.
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">function</code></dt>

    <dd>

     <p class="para">
      The name of the function or method.
     </p>
    </dd>

   
  </dl>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.uopz-get-hook-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns the previously set hook on a function or method, or <strong><code>NULL</code></strong> if no hook
   has been set.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.uopz-get-hook-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="uopz-add-function.example.basic">
   <p><strong>Example #1 Basic <span class="function"><strong>uopz_get_hook()</strong></span> Usage</strong></p>
   <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">function&nbsp;</span><span style="color: #0000BB">foo</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">uopz_set_hook</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">,&nbsp;function&nbsp;()&nbsp;{echo&nbsp;</span><span style="color: #DD0000">'bar'</span><span style="color: #007700">;});<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">uopz_get_hook</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
   </div>

   <div class="example-contents"><p>以上例程的输出类似于：</p></div>
   <div class="example-contents screen">
<div class="cdata"><pre>
object(Closure)#2 (0) {
}
</pre></div>
   </div>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.uopz-get-hook-seealso">
  <h3 class="title">参见</h3>
  <ul class="simplelist">
   <li class="member"><span class="function"><a href="uopz_set_hook.html" class="function" rel="rdfs-seeAlso">uopz_set_hook()</a> - Sets hook to execute when entering a function or method</span></li>
   <li class="member"><span class="function"><a href="uopz_unset_hook.html" class="function" rel="rdfs-seeAlso">uopz_unset_hook()</a> - Removes previously set hook on function or method</span></li>
  </ul>
 </div>


</div></div></div></body></html>